HIGH-DENSITY MOLDING DEVICE AND HIGH-DENSITY MOLDING METHOD FOR MIXED POWDER

摘要

A first die is filled with a mixed powder prepared by mixing a low-melting-point lubricant powder into a basic metal powder in a weight ratio of 0.1 to 0.2%. A first pressure is applied to the mixed powder in the first die to form a mixed powder intermediate compressed body having a true density ratio of 80 to 90%. The mixed powder intermediate compressed body is heated to the melting point of the lubricant powder. The heated mixed powder intermediate compressed body is placed in a second die that is pre-heated to the melting point of the lubricant powder. A second pressure is applied to the mixed powder intermediate compressed body in the second die to form a high-density mixed powder final compressed body.

主权项

1. A mixed powder high-density molding method comprising:
filling a first die with a mixed powder prepared by mixing a low-melting-point lubricant powder into a basic metal powder in a weight ratio of 0.1 to 0.2%; applying a first pressure to the mixed powder in the first die to form a mixed powder intermediate compressed body having a true density ratio of 80 to 90%; heating the mixed powder intermediate compressed body removed from the first die to a melting point of the lubricant powder; placing the heated mixed powder intermediate compressed body in a second die; and applying a second pressure to the mixed powder intermediate compressed body in the second die to form a high-density mixed powder final compressed body.